Clinches is a term used to describe a situation in which a deal or agreement is finalized and secured. Ensures, with 7 letters, is a verb meaning to make certain that something will happen or be the case. Ices, with 4 letters, is a verb meaning to cover or coat with ice. Seals, with 5 letters, is a verb meaning to close or secure something with a seal. Sewsup, with 6 letters, is a verb meaning to sew together. All of these terms are related to the idea of clinching a deal, as they all involve securing something in some way.